GM Service Manual Online
For 1990-2009 cars only

    Important: Do not remove the pick up screen and pipe. They are only serviced as part of the oil pump.

  1. Remove the oil pump drive shaft and the retainer.
  2. Remove the oil pump body screws.
  3. Remove the oil pump body cover.
  4. Important: Mark the gear teeth so the pump can be installed with the same gear teeth indexed.

  5. Remove the drive gear and shaft.
  6. Remove the idler gear.
  7. Remove the pressure relief valve spring retaining pin.
  8. Remove the pressure relief valve spring.
  9. Remove the pressure relief valve.